MC-3565: Build stabilization for MC-1438

Fix expected result of adding image to disabled text content type on stage; should see it as text

Author: danmooney2

app/code/Magento/PageBuilder/Test/Mftf/Test/AdminPageBuilderTextTest.xml

@@ -1533,7 +1533,7 @@
         <actionGroup ref="switchToPageBuilderStage" stepKey="switchToPageBuilderStage"/>
         <!-- Validate Stage After Save -->
         <comment userInput="Validate Stage After Save" stepKey="commentValidateStage2"/>
-        <waitForElementVisible selector="{{TextOnStage.imageSource('1', ImageUpload3.fileName)}}" stepKey="waitForImageStage2"/>
+        <waitForElementVisible selector="{{TextOnStage.textAreaText('1', ImageUpload3.value)}}" stepKey="waitForRawImageSourceToAppearInTextarea"/>
         <!-- Validate Storefront -->
         <comment userInput="Validate Storefront" stepKey="commentValidateStorefront"/>
         <actionGroup ref="navigateToStoreFront" stepKey="navigateToStoreFront">